SHT40 PVC RS485 Digital Humidity and Temperature Sensor 2m
The SHT40-PVC-RS485 Temperature and Humidity Sensor features the high-accuracy Sensirion SHT40 chip with RS485 Modbus-RTU communication for industrial monitoring systems. Designed with an open-shell PVC housing and high-sensitivity probe, it ensures fast and precise air measurement in clean indoor environments. Operating at 5–28V DC with low power consumption, it integrates easily with PLC, HMI, and SCADA systems, making it ideal for offices, laboratories, and equipment rooms.
حساس الحرارة والرطوبة SHT40-PVC-RS485 يعتمد على شريحة Sensirion SHT40 عالية الدقة ويدعم اتصال RS485 ببروتوكول Modbus-RTU للأنظمة الصناعية. يتميز بهيكل PVC مفتوح وتصميم حساس عالي الاستجابة لقياس الهواء بسرعة ودقة في البيئات الداخلية النظيفة. يعمل بجهد 5–28 فولت DC مع استهلاك طاقة منخفض، ويتكامل بسهولة مع أنظمة PLC وHMI وSCADA، مما يجعله مناسباً للمكاتب والمختبرات وغرف الأجهزة.
The SHT40-PVC-RS485 Temperature and Humidity Sensor is a precision environmental monitoring device built around the high-performance SHT40 sensor manufactured by Sensirion. Known for its excellent accuracy, long-term stability, and durability, the SHT40 enables low-error air temperature and humidity measurements in controlled indoor environments.
This version integrates RS485 communication using the Modbus-RTU protocol, allowing seamless connectivity with PLC systems, HMIs, SCADA platforms, industrial controllers, and centralized monitoring equipment.
The sensor features an open-shell PVC protective housing with a high-sensitivity probe design. This structure allows direct air contact for faster response time and improved environmental detection accuracy. It is specifically designed for indoor, clean, and dry environments such as offices, laboratories, machine rooms, and monitoring cabinets.
⚠ Important: The housing is not waterproof or dustproof and should not be used in harsh, corrosive, or high-humidity environments.
Specifications
🔸 General
Model: SHT40-PVC-RS485
Internal Sensor: Sensirion SHT40
Function: Air temperature and humidity measurement
Design: Open-shell high sensitivity probe
🔸 Electrical
Power Supply: 5–28V DC
Maximum Power Consumption: ≤0.05W
🔸 Accuracy (at 25°C)
Humidity: ±3%RH (at 60%RH)
Temperature: ±0.3°C
🔸 Measurement Range
Temperature (converter circuit): +40°C to +85°C
Humidity: 0%RH to 100%RH
🔸 Resolution
Temperature: 0.1°C
Humidity: 0.1%RH
🔸 Performance
Refresh Cycle: 2 seconds
Long-Term Stability:
Temperature: ≤0.1°C/year
Humidity: ≤1%RH/year
Response Time:
Temperature: ≤25 seconds (1 m/s airflow)
Humidity: ≤8 seconds (1 m/s airflow)
🔸 Communication
Interface: RS485
Protocol: Modbus-RTU
🔸 Physical
Cable Length: 50 cm
Sensor Dimensions: 66.5 × 15 mm
Housing: PVC open-shell (non-waterproof, non-dustproof)
🔹 Connection Diagram
V+ (Brown): 5–28V DC positive power
V- (Black): 0V DC ground
RS485-A (Green/Yellow): RS485-A signal
RS485-B (Blue): RS485-B signal
Applications
Offices and commercial buildings
Laboratories
Machine rooms
Electrical cabinets
Clean indoor monitoring systems
Environmental data logging
Industrial monitoring panels